December weather forecast
Summersville, WV

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Weather in December

The first month of the winter, December, is also a wintry month in Summersville, West Virginia, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 41.9°F (5.5°C).

Temperature

December signifies a gentle decline in Summersville's average high-temperature, easing from a cool 50.2°F (10.1°C) in November to a cold 41.9°F (5.5°C). Throughout December, the nighttime temperature averages to a freezing cold 30°F (-1.1°C).

Humidity

In December, the average relative humidity in Summersville is 82%.

Rainfall

In Summersville, in December, during 14.5 rainfall days, 3.58" (91mm) of precipitation is typically accumulated. In Summersville, during the entire year, the rain falls for 190.3 days and collects up to 36.93" (938mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Summersville, during December, snow falls for 12.2 days and regularly aggregates up to 7.72" (196mm) of snow. Throughout the year, there are 60.4 snowfall days, and 38.62" (981mm) of snow is accumulated.

Daylight

With an average of 9h and 36min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:21 am and sunset at 5:03 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:13 pm EST.

Sunshine

In December, the average sunshine is 4.3h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

In Summersville, 41.9°F (5.5°C) is the average high-temperature and 30°F (-1.1°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 86°F (30°C).

What is the average humidity in December?

In Summersville, the average relative humidity in December is 82%.

How many days does it rain in December?

In Summersville, in December, it is raining for 14.5 days, with typically 3.58" (91mm) of accumulated precipitation.

How many days does it snow in December?

In Summersville, in December, snow falls for 12.2 days, with typically accumulated 7.72" (196mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 36min of daylight.

What is the average length of the day in December?

In Summersville, the average day length in December is 9h and 33min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:21 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:13 pm EST.

How many hours of sunshine does Summersville have in December?

In Summersville, the average sunshine duration in December is 4.3h.

When is the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Summersville, WV

Average temperature in December - Summersville, WV
  • Average high temperature in December: 41.9°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in December: 30°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

Average pressure in December
Summersville, WV

Average pressure in December - Summersville, WV
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in December
Summersville, WV

Average wind speed in December - Summersville, WV
  • Average wind speed in December: 6.7mph

The windiest months (with the highest average wind speed) are January and February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December
Summersville, WV

Average humidity in December - Summersville, WV
  • Average humidity in December: 82%

The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are June, July, August and November (78%).

Average rainfall in December
Summersville, WV

Average rainfall in December - Summersville, WV
  • Average rainfall in December: 3.58"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is September (1.69").

Average rainfall days in December
Summersville, WV

Average rainfall days in December - Summersville, WV
  • Average rainfall days in December: 14.5 days

The month with the highest number of rainy days is May (23.3 days).
The month with the least rainy days is November (12.2 days).

Average snowfall in December
Summersville, WV

Average snowfall in December - Summersville, WV
  • Average snowfall in December: 7.72"

The month with the highest snowfall is January (8.94").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Summersville, WV

Average snowfall days in December - Summersville, WV
  • Average snowfall days in December: 12.2 days

The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Summersville, WV

Average daylight in December / Average sunshine in December - Summersville, WV
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in December
Summersville, WV

Average sunshine days in December - Summersville, WV
  • Average sunshine days in December: 8.6 days

The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (6.1 days).

Average UV index in December
Summersville, WV

Average UV index in December - Summersville, WV
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Summersville, WV

Average cloud cover in December - Summersville, WV
  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in December
Summersville, WV

Average visibility in December - Summersville, WV
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).

Summersville, West Virginia, USA

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